Series: TRIONA round Decorative round LED surface-mounted luminaire. Flat, seamless frame: aluminium extrusion profile, powder coated. Cover made of sheet steel, powder-coated. Direct light emission through a diffuser plastic opal/prismatic. Indirect light emission through a flush diffuser made of satin-finish plastic. Lightguide and diffuser made of non-yellowing plastic (PMMA). Lateral light emission (RZB SIDELITE technology) for above-average homogeneous light distribution. Direct 70%, indirect 30% light emission. Suitable for Ceiling mounting, Wall (surface). Tool-free mounting via bayonet connection. Very easy installation thanks to plug-and-play connector system. Electronic ballast included. With Casambi smart+free Bluetooth control for wireless network and operation using Android / iOS devices, free app available for download. Perfect for office areas (RUG < 19) and environments with computer screens in accordance with EN 12464-1. Colour: silver, matt (approx. RAL 9006) Diameter: 461 mm Height: 88 mm Lamp: LED Socket: without socket Colour temperature: 4000K Colour rendering index (CRI): 80 System power: 37 W Rated luminous flux: 4200 lm Beam angle Down: 93° Luminous efficiency: 114 lm/W Control gear: Dimmable Bluetooth converter Protection class: I Type of protection: IP 20